Improve Performance
The following links provide information on how to resolve Firebird Performance Problems:
http://www.slideshare.net/ibsurgeon/resolving-firebird-performance-problems
http://ibexpert.net/ibe/uploads/Main/FirebirdPerformance_WhitePaper_ENG_201604.pdf
http://www.firebirdsql.org/file/community/conference-2014/pdf/16_tpcc_presentation.pdf